john d



UNITED STATES PATENT OFFICE.

JOHN D. SAMMONS, OF HOT SPRINGS, ARKANSAS, ASSIGNOR OF ONE-HALF TO JOHN J. SUMPTER, OF SAME PLACE.

LlFTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 242,735, dated June '7, 1881.

Application filed March 12, 1881.

To all whom it may concern v Be it known that I, JOHN D. SAMMoNs, of

Hot S prin gs,in thecounty ot'Gai-land, and in the State of Arkansas, have invented certain new and useful Improvements 'in Lifting-Jacks; and I do hereby declare .that the following is a full, clear, and exact descriptionthcrcof, reference beinghad to the accompanying drawing, and to the letters of reference marked thereon, making a part of this specification.

This invention has for its objects to provide alight, cheap, and efi'ective lifting-jack for various purposes. These objects I attain by the device shown in the accompanying draw- 1 ing, in which is represented a vertical sectional view of my apparatus.

In the said drawing, the letter A indicates a hollowshaft or body, constructed of wood or any other suitable material, and mounted on a base, B.

The letter 0 indicates a ratchetbar arranged to be moved vertically within the hollow shaft or body, the teeth of which are adapted to engage the loose detent D, which is pivoted in a suitable slot in the side of the shaft or body A. The upper end of the ratchet-bar is provided with a slotted head, in the slot of which is pivoted a lever, E, the upper end of which (N0 model.)

is provided with a pivoted block, F, havinga curved seat, G, which is placed under the object to be lifted.

It will be seen that by means of the ratchetbar the apparatus may be adjusted to the height of the object, and held securely thereunder, after leverage may be applied by the lever E, so as to properly elevate such. object.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

As a new article of manufacture, a liftingjack composed of a hollow shaft or body, A, with a suitable base, B, a loose deteut, D, and a ratchetbar, O, to which is pivoted a lever,E, upon the upper end of which is carried an oscillating bearing-block, F, as and for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 26th. day of March, 1880.

JOHN 2 1). SAMMONS.

mark.

Witnesses:

W. W. WRIGHT, JONATHAN WELK. 

